JPH09272765A - Propylene polymer composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a propylene polymer compsn. which has excellent mechanical strengths and is excellent in the adhesion to a coating material, such as a melamine or urethane resin coating material, even when not subjected to a surface treatment. SOLUTION: This compsn. comprises 1-99 pts.wt. propylene polymer, 99-1 pt.wt. olefin elastomer (the sum of the polymer and the elastomer being 100 pts.wt.), and 1-30 pts.wt. polar propylene polymer which is obtd. by reacting a propylene polymer having a crystallinity of 70% or higher and a pentad isotacticity of 75% or higher, a modified propylene polymer obtd. by thermally grafting an unsatd. compd. having a carboxyl or an acid anhydride group in the presence of a free radical initiator, and an amine compd.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD OF THE INVENTION The present invention relates to a propylene polymer composition which is excellent in coatability and mechanical strength, and more specifically, for example, a melamine resin-based composition even when it is not surface-treated with a primer or a solvent. paint,
The present invention relates to a propylene-based polymer composition having high adhesion to paints such as urethane resin-based paints and having excellent mechanical strength.

[0002]

BACKGROUND OF THE INVENTION Propylene polymers are widely industrially produced because of their good properties such as mechanical properties, heat resistance, solvent resistance, oil resistance and chemical resistance.
Such a propylene-based polymer may be used alone or as a composition containing another olefin-based polymer,
It is widely used as a raw material for manufacturing industrial parts such as electrical equipment and daily necessities.

However, since the propylene-based polymer does not have a polar group in the molecule, the adhesion with other resins is not good. For this reason, for example, in order to coat a propylene-based polymer molded product with a urethane resin-based paint, a surface treatment method such as an electrical treatment method, a mechanical surface roughening method, a flame treatment method, an oxygen treatment method, or an ozone treatment method is used. It is necessary to utilize it to improve the affinity of the surface of the molded article for other resins. When performing these surface treatments,
The surface of the molded product is previously cleaned with an organic solvent or solvent vapor of the organic solvent. In order to carry out these surface treatment methods, an apparatus for treating all of them is required, which is economically disadvantageous, and these treatments require a considerable time.

After performing the above-described surface treatment,
In addition to the method of painting, a method of applying a primer such as a urethane resin-based paint on the molded article by applying a primer capable of adhering to the propylene-based polymer to the undercoat layer is also used. In addition, since the undercoating step and the overcoating step are required, the coating step requires a long time, and the coating film has a two-layer structure, which increases the cost of the molded product and is economically disadvantageous.

In addition to the above-mentioned surface treatment method, as a method for improving the affinity between a propylene polymer and another resin, a method of blending a olefin polymer having a polar group with a propylene polymer is known. is there. This method is economically advantageous as compared with the above-mentioned method, and also has an excellent affinity for the obtained propylene polymer composition for other resins. However, in this method, various properties such as mechanical properties of the propylene-based polymer may be significantly reduced.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional techniques, and has excellent coatability with respect to paints such as melamine resin-based paints and urethane resin-based paints, and It is an object of the present invention to provide a propylene-based polymer composition having excellent mechanical strength.

[0007]

SUMMARY OF THE INVENTION A first propylene-based polymer composition according to the present invention comprises (A) a propylene-based polymer; 1 to 99 parts by weight, (B) an olefin-based elastomer; 99 to 1 parts by weight,
[However, the total amount of the component (A) and the component (B) is 100 parts by weight] and (C) a propylene polymer having a crystallinity of 70% or more and a pentad isotacticity of 75% or more. A modified propylene polymer (c-1) obtained by heating (c-0) and an unsaturated compound having a carboxyl group or an acid anhydride group in the molecule in the presence of a radical initiator to cause a graft reaction; Polar group-containing propylene polymer obtained by reacting with amino compound (c-2); (A)
1 to 100 parts by weight of the total amount of the components and the component (B)
It is characterized by comprising 30 parts by weight.

The second propylene polymer composition according to the present invention comprises (A) a propylene polymer; 1 to 99 parts by weight, (B) an olefin elastomer; 99 to 1 parts by weight [where (( The total amount of the components (A) and (B) is 100 parts by weight], (c-1) a propylene polymer having a crystallinity of 70% or more and a pentad isotacticity of 75% or more (c -0) and an unsaturated compound having a carboxyl group or an acid anhydride group in the molecule are heated in the presence of a radical initiator to cause a graft reaction; the above component (A) and (B). ) Total amount with ingredients 1
1 to 20 parts by weight with respect to 00 parts by weight, and (c-2) an amino compound; 0.01 to 10 parts by weight based on 100 parts by weight of the total amount of the above-mentioned components (A) and (B). It is characterized by that.

In the present invention, the modified propylene polymer (c-1) preferably has an intrinsic viscosity [η] measured in decalin at 135 ° C. in the range of 0.1 to 1.0 dl / g. The amino compound (c-2) is preferably 2-aminoethanol, N-aminoethylethanolamine or 2- (2-aminoethoxy) ethanol.

The first and second propylene polymer compositions according to the present invention contain an organotin compound and / or a tertiary amino compound in a total amount of 100 parts by weight of the components (A) and (B). It is desirable to contain 0.01 to 5 parts by weight with respect to parts.

[0011]

DETAILED DESCRIPTION OF THE INVENTION Hereinafter, the propylene polymer composition according to the present invention will be described in detail. The first propylene-based polymer composition according to the present invention has (A) a propylene-based polymer, (B) an olefin-based elastomer, and (C) a crystallinity of 70% or more, and a pentad isotacticity. Modified propylene polymer obtained by heating 75% or more of a propylene polymer (c-0) and an unsaturated compound having a carboxyl group or an acid anhydride group in the molecule in the presence of a radical initiator to cause a graft reaction. It is formed from a polar group-containing propylene polymer obtained by reacting the polymer (c-1) with the amino compound (c-2).

The second propylene polymer composition according to the present invention comprises (A) a propylene polymer, (B) an olefin elastomer, and (c-1) a crystallinity of 70% or more, A propylene polymer (c-0) having a pentad isotacticity of 75% or more and an unsaturated compound having a carboxyl group or an acid anhydride group in the molecule are heated in the presence of a radical initiator to cause a graft reaction. It is formed from the modified propylene polymer obtained by (1) and (c-2) an amino compound.

First, the respective components forming the propylene polymer composition according to the present invention will be described in order. [Propylene-based polymer (A)] The propylene-based polymer (A) used in the present invention is a homopolymer of propylene or a copolymer of propylene and another α-olefin. Examples of α-olefins copolymerized with propylene include ethylene, 1-butene, 1-pentene, 2-methyl-1-butene, 3-methyl-1-butene, 1-hexene, 3-methyl-1-pentene. , 4-methyl-1-pentene, 3,3-dimethyl-1-butene, 1-heptene, methyl-1-hexene, dimethyl-1-pentene, trimethyl-1-butene, ethyl-1-pentene, 1-octene -1, methyl-1-pentene, dimethyl-1-hexene,
Trimethyl-1-pentene, ethyl-1-hexene, methylethyl-1-pentene, diethyl-1-butene, propyl-1-pentene, 1-decene-1, methyl-1-nonene, dimethyl-1-octene, trimethyl -1-heptene, ethyl-1-octene,
Mention may be made of methylethyl-1-heptene, diethyl-1-hexene, 1-dodecene and 1-hexadodecene. These α-olefins may form a random copolymer with propylene, or may form a block copolymer. In the present invention, propylene homopolymer,
Crystalline propylene / ethylene block copolymer having an ethylene content of 2 to 40 mol% and an ethylene content of 0.5 to 10
A mol% of crystalline propylene / ethylene random copolymer is preferred.

Such a propylene-based polymer (A) is
Melt flow rate (MFR; ASTM D123)
8,230 ° C, load 2.16kg) 0.05-200
g / 10 minutes, preferably 0.05 to 100 g / 10 minutes, more preferably 0.5 to 60 g / 10 minutes. By using a propylene polymer having such an MFR, good moldability can be ensured. The density of the propylene-based polymer (A) is usually 0.8
It is preferably in the range of 9 to 0.92 g / cm ³ .

The propylene polymer (A) having such characteristics can be produced by various methods. As a typical production method, a solid titanium catalyst component and an organometallic compound catalyst component are used. It can be produced by using the formed catalyst or a highly active titanium catalyst formed from both components and an electron donor.

The solid titanium catalyst component used in this method is titanium trichloride or a titanium trichloride composition produced by various methods and preferably has a specific surface area of 100 m ^2.
/ G or more of a titanium catalyst component supported on a carrier or magnesium, a halogen, an electron donor, preferably an aromatic carboxylic acid ester or an alkyl group-containing ether, and titanium as essential components.
It is a titanium catalyst component supported on a carrier of m ² / g or more. In particular, a propylene-based polymer produced using the latter catalyst component with a carrier is preferred.

Further, as the organometallic compound catalyst component,
Organoaluminum compounds are suitable, and specific examples of the organoaluminum compounds include trialkylaluminum, dialkylaluminum halides, alkylaluminum sesquihalides, alkylaluminum dihalides and the like. The organoaluminum compound can be appropriately selected according to the type of the titanium catalyst component used.

As the electron donor, an organic compound having an oxygen atom, a nitrogen atom, a phosphorus atom, a sulfur atom, a silicon atom or a boron atom can be used, and an ester having an atom other than the oxygen atom as described above. Preferred examples include compounds and ether compounds.

Regarding the method for producing a propylene-based polymer using the catalyst component with a carrier as described above, for example, JP-A-50-108385 and JP-A-50-1265.
No. 90, JP-A-51-20297, JP-A-51-28
No. 189, JP-A No. 52-151691, etc., and the techniques described therein can be used in the present invention.

In the present invention, the propylene polymer (A)
Is 1 to 99 parts by weight, preferably 20 to 95 parts by weight, more preferably 30 to 80 parts by weight, based on 100 parts by weight of the total amount of the propylene-based polymer (A) and the olefin-based elastomer (B) described later. Used in parts by weight.

[Olefin-based Elastomer (B)] The olefin-based elastomer (B) used in the present invention is a mixture of α-olefins such as ethylene, propylene, 1-butene, 1-pentene, 1-hexene and 1-octene. It is a polymer or a copolymer of these α-olefins and non-conjugated dienes.

Specific examples of non-conjugated dienes include dicyclopentadiene, 1,4-hexadiene, dicyclooctadiene, methylenenorbornene and 5-ethylidene.
2-norbornene and the like.

Specific examples of the olefin elastomer (B) include ethylene / propylene copolymer rubber, ethylene / 1-butene copolymer rubber, ethylene / propylene /
Consisting of olefins such as 1-butene copolymer rubber, ethylene / propylene / non-conjugated diene copolymer rubber, ethylene / 1-butene / non-conjugated diene copolymer rubber, ethylene / propylene / 1-butene / non-conjugated diene copolymer rubber An amorphous elastic copolymer can be mentioned.

The Mooney viscosity [ML _{1 + 4} (100 ° C .; JIS
K 6300)] is from 10 to 150, preferably from 40 to 150.
120. The iodine value (unsaturation degree) of the olefin-based elastomer (B) is preferably 16 or less.

In the present invention, the olefin elastomer (B) is preferably 99 to 1 part by weight, preferably 100 parts by weight, based on 100 parts by weight of the propylene polymer (A) and the olefin elastomer (B). It is used in an amount of 80 to 5 parts by weight, more preferably 70 to 20 parts by weight.

[Polar group-containing propylene polymer (C)] The polar group-containing propylene polymer (C) used in the first propylene polymer composition according to the present invention is a modified propylene polymer (c-1). And an amino compound (c-2) are reacted with each other.

Modified propylene polymer (c-1) The modified propylene polymer (c-1) which is a raw material of the polar group-containing propylene polymer (C) is a propylene polymer having a carboxyl group or an acid anhydride group in the molecule. This modified propylene polymer (c-1) is a radical initiator containing a propylene polymer (c-0) as described below and an unsaturated compound having a carboxyl group or an acid anhydride group in the molecule. It can be obtained by heating in the presence and causing a graft reaction.

The propylene polymer (c-0) is a homopolymer of propylene and has an intrinsic viscosity measured in decalin at 135 ° C. of 0.1 to 2.0 dl / g, preferably 0.1.
To 1.0 dl / g, more preferably 0.15 to 0.8
dl / g, the crystallinity is 70% or more, preferably 73% or more, and the pentad isotacticity (mmmm fraction) is 75% or more, preferably 80%.
That is all. The propylene polymer (c-0) may contain a small amount of a structural unit derived from an olefin other than propylene, for example, 0.5 mol% or less.

The crystallinity is measured as follows.
That is, the sample is 1 mm thick with a pressure molding machine at 180 ° C.
Rotorflex RU3 manufactured by Rigaku Denki Co., Ltd. using a press sheet obtained by immediately cooling with water after molding into a rectangular plate
00 measuring device (output 50 kV, 250 mA). As a measuring method at this time, a transmission method is used, and the measurement is performed while rotating the sample.

The mmmm fraction is P _mmmm in the ¹³ C-NMR spectrum (absorption intensity derived from the methyl group of the third unit at the site where 5 units of propylene units are continuously isotactically bonded) and P _W (of propylene units). It is calculated from the absorption intensity of the absorption intensity derived from all methyl groups) by the following formula (1).

Mmmm fraction (%) = P _mmmm / P _W × 100 The NMR measurement is performed as follows, for example. That is, 0.35 g of a sample was mixed with hexachlorobutadiene 2.0
Heat and dissolve in ml. After the solution is filtered through a glass filter (G2), 0.5 ml of deuterated benzene is added, and the solution is charged into an NMR tube having an inner diameter of 10 mm. Then, using a JEOL GX-500 type NMR measuring device, 1
¹³ C-NMR measurement is performed at 20 ° C. The total number of times is 10,
000 times or more.

Such a propylene polymer (c-0) is
A high-molecular weight propylene polymer produced by using a high-activity titanium catalyst similar to that used in the production of the propylene-based polymer (A), or a high-molecular weight propylene polymer produced by using the high-activity titanium catalyst is used as an organic peroxide. Can be produced by heating and degrading in the presence or absence of.

Here, as the organic peroxide, 2,5-dimethyl-2,5-bis (t-butylperoxy) hexane and 2,5-dimethyl-2,5-bis (t-butylperoxy) Hexin-3,
Di-t-butyl peroxide, dicumyl peroxide, t-butyl cumyl peroxide, α, α'-bis (t
Dialkyl peroxides such as -butylperoxy-m-isopropyl) benzene; t-butyl hydroperoxide, cumene hydroperoxide, 2,5-dimethylhexane-2,5-dihydroperoxide, 1,1,3 Hydroperoxides such as 1,3-tetramethylbutyl hydroperoxide can be mentioned. These may be used alone or in combination of two or more.

The amount of the organic peroxide used is usually 0.01 to 5 parts by weight, preferably 0.05 to 3 parts by weight, based on 100 parts by weight of the propylene polymer (c-0). As a device for heat degradation, a conventionally known device is used, and for example, a tubular reactor, a tank reactor, a single-screw or twin-screw extruder, etc. are used.

When the thermal degradation of the high molecular weight propylene polymer is carried out in the presence of an organic peroxide, the thermal degradation temperature is in the range of 300 to 460 ° C, preferably 350 to 440 ° C. Further, as an apparatus for performing heat degradation, it is preferable to use an extruder capable of sufficiently kneading.

When the thermal degradation of the high molecular weight propylene polymer is carried out in the absence of organic peroxide, the thermal degradation temperature is 150 to 380 ° C, preferably 170 to 300 ° C.
Range. In addition, as a device for performing heating degradation, it is preferable to use a tubular reactor capable of heating at a lowered temperature.

The modified propylene polymer (c-1) comprises the above-mentioned propylene polymer (c-0) and an unsaturated compound having a carboxyl group or an acid anhydride group in the molecule in the presence of a radical initiator. It can be obtained by heating and causing a graft reaction.

Specific examples of the unsaturated compound having a carboxyl group or an acid anhydride group in the molecule include acrylic acid, methacrylic acid, α-ethylacrylic acid, maleic acid, fumaric acid, itaconic acid, citraconic acid and tetrahydro. Α, β- such as phthalic acid and methyltetrahydrophthalic acid
Unsaturated carboxylic acid; maleic anhydride, itaconic anhydride,
Α, β-Unsaturated carboxylic acid anhydrides such as citraconic anhydride and tetrahydrophthalic anhydride; unsaturated carboxylic acid anhydrides such as bicyclo [2.2.1] hept-2-ene-5,6-dicarboxylic acid anhydride Is mentioned. Among them, acrylic acid, maleic acid, itaconic acid, maleic anhydride and itaconic anhydride are preferred.

As the radical initiator, organic peroxides,
A compound such as an azo compound is used. As the organic peroxide, specifically, 1,1-bis (t-butylperoxy)
-3,5,5-Trimethylcyclohexane, 1,1-bis (t-butylperoxy) cyclohexane, 2,2-bis (t-butylperoxy) octene, n-butyl-4,4-bis (t- Peroxyketals such as butylperoxy) valerate and 2,2-bis (t-butylperoxy) butane; di-t-butylperoxide, dicumylperoxide, t-butylcumylperoxide, α, α ' -Bis (t-butylperoxy-m-isopropyl) benzene, 2,5-dimethyl-2,5-bis (t-butylperoxy) hexane, 2,5-dimethyl-2,5-
Dialkyl peroxides such as bis (t-butylperoxy) hexyne-3; acetyl peroxide, isobutyryl peroxide, octanoyl peroxide,
Diacyl peroxides such as decanoyl peroxide, lauroyl peroxide, 3,5,5-trimethylhexanoyl peroxide, benzoyl peroxide, 2,4-dichlorobenzoyl peroxide, m-toluoyl peroxide; t- Butyl peroxyacetate,
t-butylperoxyisobutyrate, t-butylperoxy-2-ethylhexanoate, t-butylperoxylaurylate, t-butylperoxybenzoate, di-t-butylperoxyisophthalate, 2,5 -Peroxyesters such as dimethyl-2,5-di (benzoylperoxy) hexane, t-butylperoxymaleic acid, t-butylperoxyisopropyl carbonate, cumylperoxyoctate; t-butyl hydroperoxide , Cumene hydroperoxide, diisopropylbenzene hydroperoxide, 2,5-dimethylhexane
Hydroperoxides such as -2,5-dihydroperoxide and 1,1,3,3-tetramethylbutyl hydroperoxide can be mentioned.

Among these, 1,1-bis (t-butylperoxy) -3,5,5-trimethylcyclohexane, di-t-butylperoxide, dicumyl peroxide, 2,5-dimethyl-2, 5-bis (t-butylperoxy) hexane, 2,5-
Dimethyl-2,5-bis (t-butylperoxy) hexyne-
3, benzoyl peroxide, 2,4-dichlorobenzoyl peroxide, m-toluoyl peroxide, and t-butylperoxy-2-ethylhexanoate are preferred.

As the azo compound, specifically,
Azoisobutyronitrile and the like can be mentioned. Such radical initiators can be used alone or in combination.

When the propylene polymer (c-0) is graft-reacted with an unsaturated compound having a carboxyl group or an acid anhydride group in the molecule, the above-mentioned unsaturated group having a carboxyl group or an acid anhydride group in the molecule is used. The saturated compound is 0.01 to 50 with respect to 100 parts by weight of the propylene polymer (c-0).
It is used in an amount of parts by weight, preferably 0.1-40 parts by weight.

The radical initiator is used in an amount of 0.01 to 10 parts by weight, preferably 0.05 to 8 parts by weight, based on 100 parts by weight of the propylene polymer (c-0).
The graft modification can be performed by a known method,
For example, there are the following methods. (I) Melt kneading the propylene polymer (c-0) and an unsaturated compound having a carboxyl group or an acid anhydride group in the molecule with a kneading device such as an intensive mixer or an extruder in the presence of a radical initiator. how to.

The above kneading is preferably carried out in an atmosphere of an inert gas such as nitrogen. The kneading temperature is a temperature at which the half-life of the radical initiator used is 1 minute, usually 150 minutes.
To 280 ° C, preferably 170 to 240 ° C, and the kneading time is usually 30 seconds to 20 minutes, preferably 1 to 10 minutes. (Ii) A method in which the propylene polymer (c-0) in a molten state is mixed with an unsaturated compound having a carboxyl group or an acid anhydride group in the molecule and a radical initiator while stirring in a reactor.

The above stirring is preferably performed in an atmosphere of an inert gas such as nitrogen. The stirring temperature is a temperature at which the half-life of the radical initiator used is 1 minute, usually 15
It is 0 to 280 ° C, preferably 170 to 240 ° C, and the mixing time is usually 0.5 to 10 hours, preferably 1 to 5 hours. The unsaturated compound having a carboxyl group or an acid anhydride group in the molecule and the radical initiator may be charged all at once when the propylene polymer (c-0) is melted,
Further, the unsaturated compound and the radical initiator may be separately dropped into the molten propylene polymer (c-0). (Iii) A method in which an unsaturated compound having a carboxyl group or an acid anhydride group in the molecule and a radical initiator are added to a solution of a propylene-based polymer (c-0) in an organic solvent and heated.

The above heating is preferably performed in an atmosphere of an inert gas such as nitrogen. The heating temperature is a temperature at which the half-life of the radical initiator used is 1 minute, usually 10
The temperature is 0 to 200 ° C., preferably 120 to 180 ° C., and the heating time is usually 0.5 to 10 hours, preferably 1 to 5 hours. The unsaturated compound having a carboxyl group or an acid anhydride group in the molecule and the radical initiator may be charged all at once when the propylene polymer (c-0) is dissolved in an organic solvent, or the dissolved propylene polymer. (C-0)
Alternatively, the unsaturated compound and the radical initiator may be separately added dropwise.

As the organic solvent, aromatic hydrocarbons such as benzene, toluene and xylene, alicyclic hydrocarbons such as cyclohexane and methylcyclohexane, and chlorine hydrocarbons such as chlorobenzene and dichlorobenzene are used. (Iv) A method in which an unsaturated compound having a carboxyl group or an acid anhydride group in the molecule and a radical initiator are added to an aqueous dispersion of a propylene polymer (c-0) and heated.

The above heating is preferably performed in an atmosphere of an inert gas such as nitrogen. The heating temperature is 60-1
The temperature is 50 ° C., preferably 80 to 100 ° C., and the heating time is usually 0.5 to 10 hours, preferably 1 to 5 hours. The unsaturated compound having a carboxyl group or an acid anhydride group in the molecule and the radical initiator are the propylene polymer (c
-0) may be batched when dispersed in water,
Further, the unsaturated compound and the radical initiator may be added separately to the propylene polymer (c-0) dispersed in water.

In addition to the above radical initiators, water-soluble persulfates such as potassium persulfate and ammonium persulfate can be used as radical initiators. (V) a propylene polymer (c-0) and an unsaturated compound having a carboxyl group or an acid anhydride group in the molecule, in the presence of a radical initiator, at a temperature not higher than the melting point of the propylene polymer, for example, 165 ° C. A method of heating at the following temperature.

The above heating is preferably performed in an atmosphere of an inert gas such as nitrogen. The heating time is usually 0.
It is 5 to 10 hours, preferably 1 to 5 hours. The unsaturated compound having a carboxyl group or an acid anhydride group in the molecule and the radical initiator may be charged all at once when the propylene polymer (c-0) is heated, or the heated propylene polymer (c- The unsaturated compound and the radical initiator may be added dropwise to 0) separately.

Among the above-mentioned modification methods, it is easy to increase the graft amount, and the modified propylene polymer (c- has an intrinsic viscosity of 0.1 to 1.0 dl / g measured in decalin at 135 ° C.). Easy to synthesize 1) (ii),
The method (iii) is preferable.

The carboxyl group and acid anhydride group of the (c-1) modified propylene polymer produced by the above method are 0.01% to 100% by weight of the propylene polymer.
.About.50% by weight, preferably 0.05 to 10% by weight.

The intrinsic viscosity of the (c-1) modified propylene polymer produced by the above method is not particularly limited, but it has a low molecular weight from the viewpoint of dispersibility in the propylene polymer composition. desirable. The intrinsic viscosity of the modified propylene polymer (c-1) measured in decalin at 135 ° C. is 0.1 to
2.0 dl / g, preferably 0.1-1.0 dl / g,
The range is more preferably 0.15 to 0.8 dl / g, and particularly preferably 0.2 to 0.5 dl / g. The modified propylene polymer (c-1) has a crystallinity of 70% or more, preferably 73% or more, and a mmmm fraction of 75.
% Or more, preferably 80% or more.

In the present invention, when the modified propylene polymer (c-1) having an intrinsic viscosity in the above range is used,
A propylene-based polymer composition is easy to produce, and the resulting propylene-based polymer composition has excellent adhesion to a coating film such as a urethane resin paint.

In the present invention, the crystallinity and mm
When the (c-1) modified propylene polymer having a mm fraction in the above range is used, the propylene polymer obtained is less likely to reduce the mechanical properties, particularly the rigidity, of the propylene polymer composition. The composition has excellent mechanical properties.

Amino Compound (c-2) The amino compound (c-2) used in the present invention is a compound having at least one amino group in the molecule, specifically, 2-aminoethanol, 3 -Amino-1-propanol, 4-amino-1-butanol, 5-amino-1-pentanol, 2-amino-1-butanol, 2-amino-2-methyl-1-propanol, 2-amino-2- Amino alcohols such as methyl-1,3-propanediol, N-aminoethylethanolamine and 2- (2-aminoethoxy) ethanol; ethylenediamine, propylenediamine, trimethylenediamine, tetramethylenediamine, pentamethylenediamine, hexamethylenediamine Such as diamines; polyamines such as diethylenetriamine, triethylenetetramine, tetraethylenepentamine; oxamides, malonamides, N'amido, Ajiboamido, Maruamido, d
-Dicarboxylic acid amides such as tartaric acid amide; hydrazines such as methylhydrazine and ethylhydrazine; phenylenediamine, toluenediamine, N-methyldiamine, N-
Examples thereof include aromatic amines such as methylphenyldiamine and aminodiphenylamine. Among them, 2-
Aminoethanol, N-aminoethylethanolamine,
2- (2-aminoethoxy) ethanol is preferably used.

The polar group-containing propylene polymer (C)
Is obtained by heating the modified propylene polymer (c-1) having a carboxyl group or an acid anhydride group in the molecule and the amino compound (c-2) as described above. In this case, the amino compound (c-2) is 0.3 to 100 times, preferably 0.5 to 50 times, the number of moles of the carboxyl group and the acid anhydride group of the modified propylene polymer (c-1). More preferably, it is used in an amount of 1 to 20 times.

Examples of this heating method include the following. (I) A method of melt-kneading the modified propylene polymer (c-1) and the amino compound (c-2). (II) A method in which the modified propylene polymer (c-1) and the amino compound (c-2) are dissolved in an organic solvent and heated. (III) A method of heating the modified propylene polymer (c-1) and the amino compound (c-2) in a water-dispersed state. (IV) A method of heating the modified propylene polymer (c-1) and the amino compound (c-2) at a temperature not higher than the melting point of the modified propylene polymer (c-1).

Further, when amino alcohol is used as the amino compound, the following method (V) is preferably used, and by using this method, a polar group-containing propylene polymer (C) having a small number of ester bonds can be produced. You can (V) The modified propylene polymer (c-1) and the amino compound (c-2) are mixed at a temperature not higher than the melting point of the modified propylene polymer (c-1) with a mole of the amino compound (c-2). The number of moles of the carboxyl groups and acid anhydride groups in the modified propylene polymer (c-1) is at least 1 time, and the mixture is mixed at a temperature not higher than the melting point of the modified propylene polymer (c-1). After maintaining at the temperature of 1 minute or more, the mixture is heated to the melting point of the modified propylene polymer (c-1) or more.

The intrinsic viscosity of the polar group-containing propylene polymer (C) produced by the above method is not particularly limited, but the polar group-containing propylene polymer (C) is contained in the propylene polymer composition. A low molecular weight is desirable from the viewpoint of dispersibility. 13 of polar group-containing propylene polymer (C)
The intrinsic viscosity measured in decalin at 5 ° C is 0.1 to 2.0.
dl / g, preferably 0.1 to 1.0 dl / g, more preferably 0.15 to 0.8 dl / g, and particularly preferably 0.2 to 0.5 dl / g.

The reaction rate between the modified propylene polymer (c-1) and the amino compound (c-2) is as follows.
The reaction rate based on the carboxyl group and acid anhydride group of 1) is 30 to 100%, preferably 50 to 100%, more preferably 80 to 100%.

After the polar group-containing propylene polymer (C) is produced as described above, the unreacted amino compound (c-2) may be removed and purified if necessary. Examples of the purification method include the following methods. (X) A method in which the unreacted amino compound (c-2) is volatilized and removed by purification by heating and melting the polar group-containing propylene polymer (C) and exposing it to a high vacuum. (Y) A method in which the polar group-containing propylene polymer (C) is dissolved in an organic solvent, and then the resulting solution is added to the poor solvent of the modified propylene polymer (c-1), and the liquid phase portion is separated by filtration for purification. (Z) A method in which a powder of the polar group-containing propylene polymer (C) is washed with a poor solvent for the modified propylene polymer (c-1) and purified.

Further, a polar group-containing propylene polymer (C)
Is an unreacted amino compound (c-2),
As long as the object of the present invention is not impaired, it can be used in the production of the propylene polymer composition according to the present invention.

In the first propylene polymer composition according to the present invention, the polar group-containing propylene polymer (C) is
1 to 3 relative to 100 parts by weight of the total amount of the propylene polymer (A) and the olefin elastomer (B).
It is used in an amount of 0 parts by weight, preferably 1 to 10 parts by weight, more preferably 2 to 7 parts by weight.

In the second propylene polymer composition according to the present invention, the propylene polymer (A) and the olefin elastomer (B) have a carboxyl group or an acid anhydride group in the molecule. The modified propylene polymer (c-1) and the amino compound (c-2) are added.

In this case, the modified propylene polymer (c-1) is contained in an amount of 1 to 20 relative to 100 parts by weight of the total amount of the propylene polymer (A) and the olefin elastomer (B). It is used in an amount of parts by weight, preferably 2 to 10 parts by weight, more preferably 3 to 7 parts by weight. Also,
The amino compound (c-2) is 0.01 to 10 parts by weight, preferably 0.05 to 100 parts by weight of the total amount of the propylene polymer (A) and the olefin elastomer (B). -7 parts by weight, more preferably 0.1-5
Used in parts by weight.

[Production of Propylene-Based Polymer Composition] The first propylene-based polymer composition according to the present invention comprises 1 to 99 parts by weight of the above-mentioned (A) propylene-based polymer and (B) olefin-based elastomer 99. To 1 part by weight [the total amount of the components (A) and (B) is 100 parts by weight], and (C) a modified propylene polymer (c-1) having a carboxyl group or an acid anhydride group in the molecule and an amino compound. It is produced by melt-kneading 1 to 30 parts by weight of a polar group-containing propylene polymer obtained by reacting with (c-2).

The second propylene-based polymer composition according to the present invention comprises the above-mentioned (A) propylene-based polymer 1 to
99 parts by weight, (B) olefin elastomer 99-1
It is produced by melt-kneading 1 part by weight, 1 to 20 parts by weight of the modified (c-1) propylene polymer, and 0.01 to 10 parts by weight of the amino compound (c-2). The total amount of the above components (A) and (B) is 100 parts by weight.

In order to produce the first or second propylene-based polymer composition according to the present invention (hereinafter sometimes simply referred to as the propylene-based polymer composition according to the present invention), the above-mentioned components are added as described above. Mixing may be performed by applying a mixing method that is generally used in the field of propylene-based polymers so that the composition ratio falls within the range. At this time, all the composition components may be mixed at the same time, or a part of the composition components may be mixed in advance to produce a so-called masterbatch, and the masterbatch and the remaining composition components may be mixed.

When producing the propylene polymer composition according to the present invention, an organotin compound and / or a tertiary amino compound may be further added. The organotin compound optionally used in the present invention has the following general formula R ¹ —SnX ¹ Y ¹ Y ² (wherein R ¹ represents an alkyl group having 4 to 10 carbon atoms, and X ¹ represents a carbon atom). An alkyl group, a chlorine atom or a hydroxyl group of the formulas 4 to 10, Y ¹ and Y ^{2, which} may be the same or different, each represents a chlorine atom, —OCOR ² or a hydroxyl group, provided that R ² is an alkyl group. , An aryl group, and an allylalkyl group).

Specific examples of such an organic tin compound include n-C ₄ H ₉ Sn (OH) ₂ Cl and n-C ₄ H ₉ Sn.
(OH) Cl ₂ , n-C ₄ H ₉ SnCl ₃ , C ₈ H ₁₇ Sn (O
H) ₂ Cl, C ₈ H ₁₇ Sn (OH) Cl ₂ , C ₈ H ₁₇ SnC
_{l 3, n-C 4 H} 9 Sn (OH) 2 OCOC 7 H 15, n-C 4 H 9
_{Sn (OH) 2 OCOC 11 H} 23, n-C 8 H 17 Sn (OH)
₂ OCOC ₇ H ₁₅ , n-C ₈ H ₁₇ Sn (OH) ₂ OCOC ₁₁ H
_{23, n-C 4 H 9} Sn (OCOC 7 H 15) 3, (n-C 4 H 9) 2
Sn (OCOC ₁₁ H ₂₃ ) ₂ , (n-C ₈ H ₁₇ ) ₂ Sn (OC
OC ₁₁ H ₂₃ ) ₂ , (n-C ₄ H ₉ ) ₂ Sn (OCOCH = C
HCOOCH ₃ ) ₂ , (n-C ₄ H ₉ ) ₂ Sn (OCOCH =
CHCOOCH ₂ Ph) ₂ or the like is used.

Among them, n-C ₄ H ₉ SnCl ₃ , (n-C
_{4 H 9) 2 Sn (OCOC} 11 H 23) 2, (n-C 8 H 17) 2 S
n (OCOC ₁₁ H ₂₃ ) ₂ is preferred. Such an organotin compound is used in an amount of 0.01 to 5 parts by weight, preferably 0.05 to 3 parts by weight, based on 100 parts by weight of the total of the propylene-based polymer (A) and the olefin-based elastomer (B). Used in quantity.

Specific examples of the tertiary amino compound used in the present invention include dimethylpropylamine, diethylpropylamine, tris (dimethylaminomethyl) phenol, tetraguanidine, N, N-.
Dibutylethanolamine, N-methyl-N, N-diethanolamine, 1,4-diazabicyclo [2.2.2] octane, 1,8
-Diazabicyclo [5.4.0] -7-undecene, tetramethylbutanediamine and the like.

Such a tertiary amino compound can be obtained by using the propylene polymer (A) and the olefin elastomer (B).
Is used in an amount of 0.01 to 5 parts by weight, preferably 0.05 to 3 parts by weight, based on 100 parts by weight of the total amount of

When a urethane resin-based coating material is applied to a molded article made of the propylene-based polymer composition of the present invention containing an organotin compound or a tertiary amino compound as described above, these compounds are Since it acts as a catalyst during the curing reaction between the polyol and the isocyanate compound, the adhesion of the coating film of the urethane resin-based paint is very excellent.

Further, other thermoplastic resins, softeners, fillers, pigments, stabilizers, plasticizers, flame retardants, etc., within the range that does not impair the physical properties and coatability of the propylene polymer composition according to the present invention. An agent, a lubricant, an antistatic agent, and an electrical property improving agent can be blended as necessary.

Specific examples of the above-mentioned other thermoplastic resins used in the present invention include high-density polyethylene, medium-density polyethylene, high-pressure low-density polyethylene, linear low-density polyethylene, poly-1-butene, Examples thereof include a propylene / 1-butene copolymer, a styrene / butadiene (.styrene) block copolymer and a hydrogenated product thereof, and a styrene / isoprene (.styrene) block copolymer and a hydrogenated product thereof.

Examples of the softening agent used in the present invention include mineral oil-based softening agents. Mineral oil-based softeners
It weakens the intermolecular force of the olefin elastomer, facilitates processing, and helps disperse carbon black, white carbon, etc., which are compounded as a filler, or lowers the hardness of the vulcanized rubber and increases flexibility and elasticity. It is a high-boiling petroleum fraction used for the purpose, and is classified into paraffinic, naphthene-based, aromatic, etc.

Specific examples of the filler used in the present invention include light calcium carbonate, heavy calcium carbonate, basic calcium carbonate, aluminum hydroxide,
Magnesium hydroxide, magnesium oxide, kaolin, clay, pyrophyllite, sericite, talc, calcium silicate (wollastonite, zonotolite, petal calcium silicate), diatomaceous earth, aluminum silicate,
Silicic anhydride, hydrous silicic acid, mica, magnesium silicate (asbestos, PMF (Processed Mineral F-iber),
Sepiolite), potassium titanate, erestadite,
Gypsum sen, glass balun, silica balun, fly ash balun, silas balun, carbon balun, organic baluns such as phenol resin, urea resin, styrene resin, saran resin, silica, alumina, barium sulfate, aluminum sulfate, calcium sulfate, magnesium sulfate. ,
Molybdenum disulfide, graphite, glass fiber (chopped strand, roving, milled glass fiber, glass flake, etc.), cut fiber, rock fiber, microfiber, carbon fiber, aromatic polyamide fiber, potassium titanate fiber, coumarone indene resin, Examples include petroleum resins.

Specific examples of the pigment used in the present invention include carbon black, titanium oxide, zinc white, red iron oxide, ultramarine blue, dark blue, azo pigment, nitroso pigment, lake pigment and phthalocyanine pigment.

The propylene polymer composition according to the present invention is produced by melt-kneading the above-mentioned components. As a kneading device, a mixing roll, an intensive mixer (for example, a Banbury mixer, a kneader), a single-screw or twin-screw extruder can be used, but a non-open type device is preferable.

The kneading is carried out at a temperature of usually 150 to 280 ° C., preferably 170 to 240 ° C., usually 1 to 20 minutes, preferably 1 to 10 minutes. The composition thus obtained is usually formed into a pellet, and a desired molded product is formed by a molding method such as an injection molding method, an extrusion molding method, or a calender molding method that is generally performed in the field of each thermoplastic resin. Manufactured to.

The molded article formed from the propylene polymer composition according to the present invention has excellent coatability with urethane resin paints and amino resin paints. Urethane resin-based paints are generally paints that form a coating film by a reaction between a polyisocyanate and a polyol compound, and are of a one-pack type or a two-pack type, and also a powder paint using a block-type isocyanate. The molded article made of the propylene-based polymer composition of the present invention has good affinity with any of these urethane resin-based paints.

The amino resin-based paint includes melamine resin-based paint, benzoguanamine resin-based paint, and urea resin-based paint. These paints react a starting material having an amino group with formaldehyde to form a monomer having high reactivity, and form a coating film by a reaction between a methylol group formed by addition condensation and a hydroxyl group of an alcohol. It is a paint to be formed, and may be used in combination with a plasticized oil-modified alkyd resin, oil-free alkyd resin, oil varnish, acrylic resin, epoxy resin, or epoxy ester resin.

Of the paints described above, a coating method using, for example, a urethane resin-based paint will be described as an example. A molded product formed from the propylene-based polymer composition according to the present invention is washed with water and generally. Washing with a typical industrial detergent is performed at least once, followed by washing with water and heating and drying. That is, when applying to a molded article formed from the propylene-based polymer composition according to the present invention, it is not always necessary to perform cleaning (surface treatment) using a chlorine-based solvent vapor, which has been conventionally performed. do not do. A urethane resin-based paint is applied to the dried body in this manner, and if necessary, heated, whereby a urethane resin coating film can be formed. The coating film thus formed has very good adhesion to the molded product, even though the cleaning using the chlorine-based solvent vapor has not been performed.

[0086]

The first propylene polymer composition according to the present invention contains a propylene polymer, an olefin elastomer, and a specific polar group-containing propylene polymer in a specific ratio. Excellent coatability for resin-based paints, amino resin-based paints, etc., and excellent mechanical strength.

The second propylene polymer composition according to the present invention comprises a propylene polymer, an olefin elastomer, a propylene polymer having a carboxyl group or an acid anhydride group in the molecule, and an amino compound. Since it is contained in a ratio, it has excellent coatability with respect to urethane resin-based paints, amino resin-based paints, etc., and also has excellent mechanical strength.

Further, the above-mentioned propylene polymer composition according to the present invention has excellent moldability and can be molded by an apparatus used for usual thermoplastics, extrusion molding, calender molding, injection molding. Suitable for molding.

Utilizing the above characteristics, the propylene-based polymer composition according to the present invention can be used for automobile parts, motorcycle parts, electric equipment parts, daily necessities, civil engineering building materials, general industrial materials, office information equipment, packaging. It can be widely used for applications to which coating is applied such as materials, sports equipment and medical equipment.

[0090]

EXAMPLES Hereinafter, the present invention will be described more specifically based on examples, but the present invention is not limited to these examples.

In the following examples and comparative examples, various physical properties of the propylene-based polymer composition were measured as follows. (1) Flexural modulus (FM) Using a test piece having a thickness of 1/8 inch, ASTM D7
Measured according to No. 90. (2) Preparation of Coatability Test Specimen The following paint was applied to a square plate molded by a 50-ton injection molding machine as follows. Before applying the following paint, the surface of the square plate was wiped with a cloth impregnated with isopropanol.

(A) Two-component urethane resin-based paint (trade name
R-271, manufactured by Nippon Bee Chemical Co., Ltd.) was applied with an air gun so that the dry film thickness became 60 μm. The baking was performed at 100 ° C. for 30 minutes.

(B) A melamine resin-based paint (trade name; Flexen # 105, manufactured by Nippon Bee Chemical Co., Ltd.) was applied by an air gun to a dry film thickness of 60 μm. Baking was performed at 120 ° C. for 30 minutes.

[0094] in accordance with the cross-cut test of the methods that are described in the cross-cut adhesion test JIS K 5400, to produce a test piece with a cross-cut, adhesive tape affixed to the test piece (trade name, manufactured by Nichiban Co., Ltd.) After that, this was rapidly pulled in the direction of 90 ° to be peeled off, and the number of crosses where the coating film remained was counted and used as an index of adhesion.

Peel strength test A coating film was prepared on a substrate, a 1 cm width was cut with a cutter blade until the blade reached the substrate, the edge of the coating film was peeled off, and the peeled coating film was then peeled off. The peel strength was measured by pulling the end of the film at a speed of 50 mm / min in the 180 ° direction until the coating film peeled.

[0096]

[Production Example 1] [Production of modified propylene polymer] A propylene homopolymer (MFR: 22 g / 10 min, crystallinity: 65.5%, pentad isotacticity: 97.9%) was twin-screw extruder. (Screw diameter: 30 mmφ) and extruded at a screw rotation speed of 25 rpm to heat-degrade at 400 ° C., the intrinsic viscosity [η] measured in decalin at 135 ° C. is 0.24 dl / g, and the crystallinity is 76. A propylene homopolymer (DPP-1) of 0.7% and pentad isotacticity: 83.3% was obtained.

500 g of the obtained DPP-1 was added to 1.5
The flask was placed in a glass separable flask having a capacity of 1 liter, and the system was replaced with nitrogen. Next, after heating the inside of the system to 170 ° C. to melt DPP-1, maleic anhydride 55.
6 g and 11.7 g of di-t-butyl peroxide were added dropwise through separate conduits over 5 hours. After continuing the reaction at 170 ° C. for 1 hour, the system was depressurized to atmospheric pressure, and a molten sample was taken out.

The modified propylene polymer (MPP-
Regarding 1), the amount of maleic anhydride grafted was determined by elemental analysis and found to be 8.4% by weight. Also, 135
Intrinsic viscosity [η] measured in decalin at ℃ is 0.23d
1 / g.

[0099]

[Production Example 2] [Production of modified propylene polymer] M prepared in Reference Example 1
300 g of PP-1 and 54 g of 2- (aminoethoxy) ethanol were placed in a glass separable flask of 1 liter capacity equipped with a stirring blade having a spiral double helical ribbon, and the system was replaced with nitrogen.

Then, while slowly stirring the inside of the system,
After heating to 180 ° C and heating for 4 hours, unreacted 2-
In order to remove (aminoethoxy) ethanol, the pressure inside the system was reduced to 5 mmHg.

Then, the contents of the flask were left to cool to obtain a modified propylene polymer (MPP-2). MP obtained
Regarding P-2, the reaction rate of the acid anhydride group calculated from the nitrogen atom content obtained by elemental analysis was 98%. The intrinsic viscosity [η] measured in decalin at 135 ° C. was 0.25 dl / g.

[0102]

[Production Example 3] [Production of modified propylene polymer] Propylene / ethylene random copolymer (MFR: 20 g / 10 min, ethylene content: 2 mol%, crystallinity: 57%, pentad isotacticity: 85. Production Example 1 except that 7%) was used
Heat degradation was performed in the same manner as above, and the intrinsic viscosity [η] measured in decalin at 135 ° C was 0.25 dl / g and the crystallinity was 6
0%, pentad isotacticity: 72.7%
Propylene / ethylene random copolymer (DPP-
2) was obtained.

A maleic anhydride-modified propylene / ethylene random copolymer (MPP- was prepared by modifying DPP-2 in the same manner as in Production Example 1 except that the obtained DPP-2 was used.
3) was obtained.

With respect to the obtained MPP-3, the amount of maleic anhydride grafted was determined by elemental analysis and found to be 8.3% by weight. The intrinsic viscosity [η] measured in decalin at 135 ° C. was 0.25 dl / g.

[0105]

Production Example 4 A modified propylene polymer (MP was prepared in the same manner as in Production Example 2 except that MPP-3 prepared in Production Example 3 was used.
P-4) was obtained.

[0106]

[Examples 1 to 4 and Comparative Examples 1 to 4]
Twin screw extruder with vent (screw diameter: 30 mmφ, L
/ D = 42) at a cylinder setting temperature of 200 ° C. to melt and knead to produce a propylene polymer composition. The composition was molded by an injection molding machine to prepare a square plate, and the above bending test and paintability test were conducted. The results are shown in Table 1.

The components in the table are as follows. [Propylene polymer] PP-1 (propylene homopolymer): MFR (ASTM)
D 1238, 230 ° C, load 2.16 kg) = 20
g / 10 min, density = 0.91 g / cm ³ PP-2 (propylene / ethylene block copolymer):
MFR (ASTM D1238, 230 ° C, load 2.1
6 kg) = 14 g / 10 minutes, density = 0.91 g / cm ³ [olefin elastomer] EBR (ethylene / 1-butene copolymer rubber): MFR (A
(STM D 1238, 190 ° C, load 2.16 kg)
= 0.5 g / 10 minutes, ethylene content = 50 mol%, density =
0.88 g / cm ³ EPR (ethylene / propylene copolymer rubber): MFR
(ASTM D 1238, 190 ° C, load 2.16k
g) = 0.7 g / 10 min, ethylene content = 81 mol%, density = 0.87 g / cm ³ [amino compound] DGA (2- (2-aminoethoxy) ethanol): H ₂ NCH ₂
CH ₂ OCH ₂ CH ₂ OH MEA (2-aminoethanol): H ₂ NCH ₂ CH ₂ OH

[0108]

[Table 1]

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location C08L 23:26) (C08L 23/10 51:06)

Claims (8)

[Claims] 1. A propylene polymer (A); 1 to 99 parts by weight; (B) an olefin elastomer; 99 to 1 parts by weight, provided that the total amount of the components (A) and (B) is 100 parts by weight. And (C) a propylene polymer (c-0) having a crystallinity of 70% or more and a pentad isotacticity of 75% or more, and a polymer having a carboxyl group or an acid anhydride group in the molecule. Polar group-containing propylene obtained by reacting a modified propylene polymer (c-1) obtained by heating a saturated compound in the presence of a radical initiator to cause a graft reaction, and an amino compound (c-2) Polymer; above (A)
1 to 100 parts by weight of the total amount of the components and the component (B)
A propylene polymer composition comprising 30 parts by weight. 2. The modified propylene polymer (c-1) is 1
The intrinsic viscosity [η] measured in decalin at 35 ° C. is 0.1
The propylene-based polymer composition according to claim 1, which is a propylene polymer of about 1.0 dl / g. 3. The amino compound (c-2) is 2-aminoethanol, N-aminoethylethanolamine or 2-aminoethanol.
The propylene-based polymer composition according to claim 1 or 2, which is (2-aminoethoxy) ethanol. 4. A total amount 1 of the component (A) and the component (B).
The propylene polymer composition according to any one of claims 1 to 3, which contains 0.01 to 5 parts by weight of the organotin compound and / or the tertiary amino compound with respect to 00 parts by weight. 5. (A) a propylene polymer; 1 to 99 parts by weight, (B) an olefin elastomer; 99 to 1 parts by weight,
[However, the total amount of the components (A) and (B) is 100 parts by weight], (c-1) Propylene having a crystallinity of 70% or more and a pentad isotacticity of 75% or more. A modified propylene polymer obtained by heating the polymer (c-0) and an unsaturated compound having a carboxyl group or an acid anhydride group in the molecule in the presence of a radical initiator to cause a graft reaction; (A) Total amount of component and (B) component 1
1 to 20 parts by weight with respect to 00 parts by weight, and (c-2) an amino compound; 0.01 to 10 parts by weight based on 100 parts by weight of the total amount of the above-mentioned components (A) and (B). A propylene-based polymer composition characterized by the above. 6. The modified propylene polymer (c-1) is 1
The intrinsic viscosity [η] measured in decalin at 35 ° C. is 0.1
The propylene-based polymer composition according to claim 5, which is a propylene polymer of about 1.0 dl / g. 7. The amino compound (c-2) is 2-aminoethanol, N-aminoethylethanolamine or 2-aminoethanol.
The propylene-based polymer composition according to claim 5, which is (2-aminoethoxy) ethanol. 8. The total amount of the components (A) and (B) is 1
The propylene polymer composition according to any one of claims 5 to 7, which contains 0.01 to 5 parts by weight of an organotin compound and / or a tertiary amino compound with respect to 00 parts by weight.